Archive

Iowa I-80 Bridge Inspection

Burgess & Niple retained Ayres as a subconsultant for the routine inspection of the I-80 bridge over the Missouri River between Council Bluffs, Iowa, and Omaha, Nebraska, for the Iowa Department of Transportation. The bridge is a multi-span steel girder bridge supporting eastbound and westbound traffic. Rope access and free climbing techniques were used to… Read More »

Clairemont Bridge Rehabilitation

Many of the thousands of students attending Chippewa Valley Technical College in Eau Claire, Wisconsin, must cross a busy six-lane highway at least once during the school day. A pedestrian overpass carries them safely over traffic as they move from one portion of campus to another. Rehabilitation of the highway provided an opportunity to rehabilitate… Read More »

Merrimac Railroad Bridge Inspection

Wisconsin & Southern Railroad Co. retained Ayres to provide a comprehensive study and evaluation of a leased bridge near Merrimac. The structure is a 22-span, 1,729-foot-long open-deck truss/open-deck girder structure over the Wisconsin River. Services included field survey and underwater contour mapping, underwater inspection with divers, structural steel superstructure inspection, load rating, risk analysis, cost… Read More »